Search | Clinical Trials Finder

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Nov 15, 2026, 8:00 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 265–288 of 319 matching trials from the live ClinicalTrials.gov search.

Filters: Condition: Respiratory Illness Clear all

Conditions: Glucose, Metabolism, Isotope Labeling, Immune System and Related Disorders, Critical Illness, Intensive Care Unit (ICU), Sepsis
Interventions: 13C6-Glucose; Drug
Lead sponsor: Vanderbilt University Medical Center; Other
Eligibility: 18 Years and older
Enrollment: 25 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2028
U.S. locations: 1
States / cities: Nashville, Tennessee

Conditions: Spinal Cord Injuries
Interventions: Not listed
Lead sponsor: US Department of Veterans Affairs; Federal
Eligibility: Not listed
Enrollment: 400 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 1998 – 2002
U.S. locations: 1
States / cities: West Roxbury, Massachusetts

Conditions: Altitude Hypoxia
Interventions: Hypoxic breathing conditions; Other
Lead sponsor: University of Texas, El Paso; Other
Eligibility: 18 Years to 40 Years
Enrollment: 17 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2026
U.S. locations: 1
States / cities: El Paso, Texas

Conditions: SARS CoV-2 Infection
Interventions: Human Amniotic Fluid; Biological
Lead sponsor: University of Utah; Other
Eligibility: 18 Years and older
Enrollment: 10 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020
U.S. locations: 1
States / cities: Salt Lake City, Utah

Conditions: Intracranial Hypertension, Critical Illness, Brain Injuries, Lung Injury, Respiratory Failure, Positive-Pressure Respiration, Intrinsic
Interventions: PEEP titrated mechanical ventilation; Other
Lead sponsor: Beth Israel Deaconess Medical Center; Other
Eligibility: 18 Years and older
Enrollment: 4 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2018
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Mechanical Ventilation, Critical Illness
Interventions: Dexmedetomidine, Propofol, Fentanyl, Midazolam, Physical and Occupational Therapy; Drug · Behavioral
Lead sponsor: University of Chicago; Other
Eligibility: 18 Years and older
Enrollment: 41 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2015
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Cough
Interventions: CRP point of care testing; Procedure
Lead sponsor: University of California, San Francisco; Other
Eligibility: 18 Years and older
Enrollment: 139 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2005 – 2006
U.S. locations: 2
States / cities: Kansas City, Missouri

Conditions: Advanced Cancer, Chronic Obstructive Pulmonary Disease (COPD), Restrictive Lung Disease, Congestive Heart Failure, End Stage Liver Disease
Interventions: Training Program Intervention; Behavioral
Lead sponsor: University of Washington; Other
Eligibility: 18 Years and older
Enrollment: 6,086 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2013
U.S. locations: 4
States / cities: Charleston, South Carolina • Seattle, Washington

Conditions: COVID, Coronavirus, COVID-19
Interventions: Hydroxychloroquine; Drug
Lead sponsor: Montefiore Medical Center; Other
Eligibility: 18 Years to 99 Years
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020
U.S. locations: 1
States / cities: The Bronx, New York

Conditions: Respiratory Syncytial Virus Infection
Interventions: Sisunatovir, Placebo; Drug
Lead sponsor: Pfizer; Industry
Eligibility: 18 Years and older
Enrollment: 16 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2024
U.S. locations: 14
States / cities: Garden Grove, California • Westminster, California • Miami, Florida + 9 more

Conditions: Influenza, Influenza -Like Illness
Interventions: Norketotifen, Placebo; Drug
Lead sponsor: Emergo Therapeutics, Inc.; Industry
Eligibility: 18 Years to 64 Years
Enrollment: 315 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2022
U.S. locations: 20
States / cities: Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more

Conditions: Critically Ill, Obstructive Sleep Apnea
Interventions: Ventilator, Alice PDx, Pulmonary function test, Muscle strength tests, Grip strength measurement, Sedatives and muscle relaxants given in the ICU; Device · Other · Drug
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 18 Years and older
Enrollment: 50 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2016
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: COVID-19, Viral Respiratory Illnesses
Interventions: Nitazoxanide, Placebo, Vitamin Super B-Complex; Drug · Dietary Supplement
Lead sponsor: Romark Laboratories L.C.; Industry
Eligibility: 55 Years to 120 Years
Enrollment: 190 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 4
States / cities: Kissimmee, Florida • Acworth, Georgia • Lake Charles, Louisiana + 1 more

Conditions: COVID-19, Vaccine-Preventable Diseases, SARS CoV 2 Infection, Upper Respiratory Tract Infection, Upper Respiratory Disease
Interventions: Novavax COVID-19 vaccine (2023-2024 formula XBB containing), Pfizer COVID-19 mRNA vaccine (2023-2024 formula XBB containing); Biological
Lead sponsor: Sarang K. Yoon, DO, MOH; Other
Eligibility: 18 Years and older
Enrollment: 1,188 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 1
States / cities: Salt Lake City, Utah

Conditions: Hypoxemia, Acute Mountain Sickness (AMS), Inflammation, Immune Response
Interventions: ACETAZOLAMIDE oral capsule, Placebo Arm; Drug · Device
Lead sponsor: University of California, Riverside; Other
Eligibility: 18 Years to 65 Years
Enrollment: 19 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025 – 2026
U.S. locations: 1
States / cities: Riverside, California

Conditions: Sars-CoV2, Covid-19
Interventions: mHealth Assessments; Other
Lead sponsor: University of Oklahoma; Other
Eligibility: 18 Years and older
Enrollment: 128 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 1
States / cities: Oklahoma City, Oklahoma

Conditions: Heart Failure, Chronic Obstructive Pulmonary Disease
Interventions: Music Therapy; Behavioral
Lead sponsor: University Hospitals Cleveland Medical Center; Other
Eligibility: 40 Years to 89 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024
U.S. locations: 1
States / cities: Cleveland, Ohio

Conditions: 2019 Novel Coronavirus Disease, 2019 Novel Coronavirus Infection, 2019-nCoV Disease, COVID-19 Pandemic, COVID-19 Virus Disease, COVID-19 Virus Infection, Coronavirus Disease 2019, Coronavirus Disease-19, SARS-CoV-2 Infection
Interventions: Diagnostic Test: Diagnostic Software as Medical Device; Device
Lead sponsor: AudibleHealth AI, Inc.; Industry
Eligibility: 18 Years to 100 Years
Enrollment: 514 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2022
U.S. locations: 1
States / cities: Sunrise, Florida

Conditions: Critical Illness, Sepsis, Acute Respiratory Failure (ARF), Multi-organ Failure, Acute Kidney Injury, Delirium Confusional State, Shock
Interventions: Point-of-care large language model decision support (ChatGPT-5); Other
Lead sponsor: MetroWest Artificial Intelligence Research Workgroup; Other
Eligibility: 18 Years and older
Enrollment: 1,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2029
U.S. locations: 1
States / cities: Framingham, Massachusetts

Conditions: Influenza -Like Illness, Influenza A, Influenza Type B, Respiratory Viral Infection, Respiratory Tract Infections
Interventions: Not listed
Lead sponsor: Evidation Health; Industry
Eligibility: 18 Years and older
Enrollment: 5,233 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2019 – 2020
U.S. locations: 1
States / cities: San Mateo, California

Conditions: Healthy Participants
Interventions: Combination [RSVpreF+BNTb162b2], Bivalent BNT162b2 (original/Omi BA.4/BA.5), RSVpreF, QIV, Normal Saline Placebo; Biological
Lead sponsor: Pfizer; Industry
Eligibility: 65 Years and older
Enrollment: 1,142 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 37
States / cities: Dublin, California • Huntington Beach, California • Lake Forest, California + 26 more

Conditions: RESPIRATORY SYNCYTIAL VIRUS (RSV)
Interventions: RSVpreF 120 µg, RSVpreF 60 µg; Biological
Lead sponsor: Pfizer; Industry
Eligibility: 2 Years to 17 Years
Enrollment: 128 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 17
States / cities: Birmingham, Alabama • Palo Alto, California • Rolling Hills Estates, California + 12 more

Conditions: Cystic Fibrosis (CF), Depressive and Anxiety Disorders, Psychological Flexibility
Interventions: ACT with CF Self-Help Toolkit, Waitlist; Behavioral · Other
Lead sponsor: Thomas Jefferson University; Other
Eligibility: 18 Years and older
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2027
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Acute Respiratory Failure
Interventions: Early ICU rehabilitation strategies, Usual Care; Other
Lead sponsor: Wake Forest University; Other
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2009
U.S. locations: 1
States / cities: Winston-Salem, North Carolina

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Tracing Of Real-time glu13Cose Metabolism in Human Immune Cells - Intensive Care Unit

Determine the Association Between the Level of SCI With Chronic Respiratory Symptoms, Measures of Pulmonary Function, and Respiratory Illness.

The Physiological Effects of Acute and Ramp Simulated Altitude Exposure During Simulated Flight Tasks

A Pilot Study of Human Amniotic Fluid for COVID19 Associated Respiratory Failure

Mechanical Ventilation in Severe Brain Injury: The Effect of Positive End Expiratory Pressure on Intracranial Pressure

Dexmedetomidine Versus Propofol in the Medical Intensive Care Unit (MICU)

C-reactive Protein (CRP)-Guided Management Algorithm for Adults With Acute Cough

Improving Clinician Communication Skills (ICCS)

Hydroxychloroquine Treatment of Healthcare Workers With COVID19 Illness at Montefiore

A Study to Learn About the Study Medicine Sisunatovir in Adults With Respiratory Syncytial Virus (RSV) Infection

Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness

Predictors of Upper Airway Function and Sleep-disordered Breathing in the Critically Ill

Trial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Post-Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses in Elderly Residents of Long-Term Care Facilities (LTCF)

The Efficacy of the 2023-2024 Updated COVID-19 Vaccines Against COVID-19 Infection

The Role of Acetazolamide in Mitigating Inflammation and Innate Immune Activation at High Altitude

Mobile Health Study and Enhanced Symptom Monitoring in COVID-19 Cancer Patients

Music Therapy to Address Patients' Journeys With Chronic Illness, Outcomes, and Readmission

Evaluation of the AudibleHealth Dx AI/ML-Based Dx SaMD Using FCV-SDS in the Diagnosis of COVID-19 Illness: Clinical Validation

Point-of-Care AI Assistance and Critical Care Outcomes: A Randomized Trial

Home Testing of Respiratory Illness

A Study to Learn About Two or More Vaccines That Are Put Together as One Shot Against Infectious Lung Illnesses, Including COVID-19 and Respiratory Syncytial Virus (RSV).

A Study to Learn About the Safety and Immune Activity of RSVpreF in Children 2 to <18 Years of Age

ACT With CF Self-Help Toolkit

Effect Of Acute Inflammatory Mediators On Functional Limitations In Patients With Acute Respiratory Failure